The announcement came ahead of Saturday's fight at the Grand between Mexican idol Canelo Alvarez and Erislandy Lara.

Mayweather has a sterling 46-0 record and has seldom granted a rematch. The only previous one came in 2002 against Jose Luis Castillo. This time, however, is different.

In their May bout, Mayweather won 117-111 and 116-112 on two judges' ballots. The third judge scored it a draw.

Mayweather's critics say he tends to select bouts he can win. In a Q&A with the Las Vegas Sun, former heavyweight champ Mike Tyson was asked his opinion of Mayweather, often called pound for pound the best boxer on the scene.

"He has beaten everyone he has fought. He is the cream of the crop," Tyson said. "I would love to see him fight [Manny] Pacquiao though."

For now we'll settle for a Maidana rematch. This will be the 10th consecutive Mayweather fight at the Grand.

By the way, Forbes said Mayweather was the highest-paid athlete between June 2013 and June 2014, banking a cool $105 million. His Alvarez bout last September brought him $70 million while setting par-per-view and gate records.